Join Date: Oct 2006
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If you are only going to remove the Update list tuner and replace with a Sony the iso connections will pull out and push in,no need to disconnect the battery as you will not be cutting any wires.
(the iso connectors will stop the wires shorting to earth).
Make sure you have the code for the Update list then you can reuse it.
Currently in Getafix's garage:
clean and shiny Scenic 2 1.6 16v Auto. (and a Fiat Campervan).